html,
body {
    margin: 0;
    font-family: "Microsoft YaHei", sans-serif;
    background: #fafafa;
    color: #333
}

.box {
    width: 800px;
    margin: 20px auto;
    background: #fff;
    border: 1px solid #e5e5e5;
    border-radius: 8px;
    padding: 20px
}

h1 {
    color: #ff6633;
    margin: 0 0 20px;
    text-align: center
}

/* 文字列表 */
.msg-list {
    border: 1px solid #f0f0f0;
    border-radius: 6px;
    overflow: hidden
}

.item {
    padding: 15px 20px;
    border-bottom: 1px solid #f0f0f0;
    cursor: pointer;
    transition: background .2s
}

.item:last-child {
    border-bottom: none
}

.item:hover {
    background: #fafafa
}

.title {
    font-size: 16px;
    font-weight: bold;
    margin-bottom: 4px
}

.txt {
    font-size: 14px;
    color: #666;
    margin-bottom: 4px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap
}

.time {
    font-size: 12px;
    color: #999
}

/* 底部按钮 */
.bottom-btn {
    text-align: center;
    margin-top: 20px
}

.btn {
    padding: 8px 20px;
    background: #ff6633;
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer
}

.btn:hover {
    background: #e55a2b
}